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주봉덕,유철재,이헌영 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.1
Biliary ascariasis results not only in biliary tract disease, but also in secondary stone formation, hemorrhage into biliaty tract, acute cholecystitis, biliary perforation, invasion to pancreatic duct, pancreatitis, he%atitis, and liver abscess. In recent, we experienced a case of biliary ascariasis with concomitant biliary stones, which was identified by ultrasonogram percutaneous transhepatic cholangiography, and computed tomography, thereby reporting it herein with a review of literatures.
정신과 외래환자의 약물치료 반응과 심박동 변이의 변화 양상
이상규,이홍석,김인주,김형태,김도훈,손봉기 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.6
Objectives : The purpose of this study was to investigate the change of heart rate variability after antidepressant treatment in depressed or anxious patients. We tried to find the usefulness of heart rate variability as a predictive marker of response to pharmacological treatments in the psychiatric field. Methods : Forty-seven patients with major depression, anxiety disorder, and somatoform disorder were treated over 4 weeks with antidepressants and were then classified as responders or nonresponders according to Hamilton depression scales or CGI scores. The HRV variables were measured and compared among the responders/nonresponders and the matched normal control. Results : The responders group exhibited low heart rate, low PSI, high SDNN, RMSSD, HRV index, NN50, pNN50, LNTP, LNLF, and LNHF compared with the nonresponders after 4 weeks antidepressant treatment. However, no significant differencein HRV vanables was observed between the responders group after treatment and the nonnal control group and the responsegroup after treatment. Conclusion : These results indicate that HRV variables would are normalized after successful antidepressant treatment and it that HRV has some possible uses as a predicting marker of antidepressant response.
ISO/IEC 15444-1 JPEG2001 표준을 지원하는 Context 기반 압축기인 MQ coder의 설계
이민우,김주현,강봉순 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
JPEG2000 use DWT(Discrete Wavelet Transform). DWT coefficient can compress by using Adaptive Bit_plane coder and MQ coder. In this paper we design the hardware architecture of MQ coder. It is based on bit_plane coder's context and decision value. JBIG2 also use MQ coder for image compression. Designed MQ coder is compatible with the JPEG2000 and JBIG2 standards.
이봉섭,주재현 三陟大學校 産業科學技術硏究院 2005 産業科學技術硏究論文集 Vol.10 No.-
In this study, the relation of discharge patterns with the radiated electromagnetic waves is investigated by measuring electromagnetic waves using a antenna and a spectrum analyzer. The patterns of radiated electromagnetic waves measured at the atmospheric pressure in Liquid Nitrogen(LN_(2)) during the partial discharges in nonuniform electric field depend on positive DC power. From these points of view, it is considered that these results obtained from this investigation may be used as fundamental data for diagnosis and prediction of insulation on the equipments of superconducting and cryogenic applications.
이상호,이진,정봉원,정헌주 三陟大學校 2002 論文集 Vol.35 No.-
In this paper, we have developed the sandwich type digital actuator in order to improve the thrust force of digital actuator in the automatic transportation system. Also, it was analyzed by Finite Element Analysis(FEA) and Virtual Work Method. As a result of this paper, it was confirmed that the thrust force characteristics of the sandwich type digital actuator was improved considerably.
이민규,윤경일,이두성,김주봉 濟州大學校 工科大學 産業技術硏究所 1992 産業技術硏究報告 Vol.3 No.-
This study is to investigate the characteristics of products on mixing ratio of raw materials for scoria tile manufacturing. The water absoprtion of scoria tile decreased as scoria particle size decreased and a ratio of scoria/sand increased. And also the water absoprtion of tile decreased as an amount of cement decreased. Smaller scoria particle size, smaller ratio of scoria and sand, and larger amount of cement enhanced strength and thermal conductivity of scoria tile. The surface pattern of scoria tile became various figures as a ratio of scoria and sand increased. Well mixing of large and small particles made surface pattern of tile diverse.
Run-Length Coding과 Huffman Coding을 이용한 영상 압축기의 하드웨어 설계
이상진,김주현,이민우,강봉순,홍창희 東亞大學校附設 情報技術硏究所 2004 情報技術硏究所論文誌 Vol.12 No.1
In this paper, we modify Run-Length Coding(RLC) and Huffman Coding(HC) algorithm for use of image compression and design as a hardwired architecture. The algorithm of RLC and HC compresses different area of Multi-Resolution Analysis(MRA) that is represented by Discrete Wavelet Transform(DWT)[1-2]. RLC compressor and decompressor is simple so that is designed like a data-path flow. HC compressor's scheme is composed of 2 stage, the first one is generation of Huffman Tree. That needs many computations and times so that uses internal memory MACRO. The second one is making binary data using Huffman Tree. The decompressor of HC is also designed simply like that of RLC decompressor's data-path flow using Huffman Tree.
이봉섭,주재현 三陟大學校 産業科學技術硏究院 2005 産業科學技術硏究論文集 Vol.10 No.-
If obstacle in power supply, its affects are great are on the community and it is consequently demanded lots of difficulties to recover and repair. Accordingly, diagnosis techniques, that are able to prevent from accidents before they happen by providing more stable and highly reliable power effectively and finding sign of the accidents, is very, important. A novel Ultra Wide Band microstrip-fed circular patch antenna i presented. The measured impedance bandwidth of the proposed antenna is from 0.5[GHz] to 2.5[GHz] with the stop band from 0.5[GHz] to 1.7[GHz] for VSWR<2. Form results of this study, The antenna is will play an important role for the sensor for insulation diagnosis system by UHF method of real site GIS and power equipment using SF_(6) gas.
NTSC/PAL/SECAM 표준을 만족하는 Variable-clock Video Encoder의 내부 필터 설계
이성목,김주현,강봉순 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
In this paper, we present the design of the filters for variable-clock video encoder in CCTV system The SONY corporation preoccupies 80% of the CCD market in CCTV application. But, SONY corporation's CCD module used in CCTV requires particular clock frequency. Generally, a video encoder is operated 27MHz sampling frequency. That is clock frequency of video encoder different with CCD's clock frequency. If we used a filter of general video encoder, filter's characteristics are changed and don't be satisfied with standard. So, we design the filters that satisfied with TV broadcasting standards without regard to clock frequency. The proposed filters are simulated by using the MATLAB. This paper also proposes the variable-clock encoder that can be activated at the clock equal to the CCD clock without the scaler and the PLL.
이희봉,정재영,최현구,김기훈,김효기,주정일 충남대학교 농업과학연구소 2001 농업과학연구 Vol.28 No.2
재래종 찰옥수수 F₁ 교잡종에 대한 생육 및 수량비교를 위해 충남대학교 농과대학 실험포장에서 육성한 이들 교잡종의 식물학적 특성에 대한 연구 결과는 다음과 같다. 1. 간장은 대조구에 비해 대학찰×재래찰, FR805/1K₃×고령찰이 가장 크게 나타났으나, FR805/1K₃×대학찰, 찰옥 1호에서 대조구와 비슷하게 나타내었다. 2. 착수수는 간장에서와 마찬가지로 대학찰×재래찰, FR805/1K₃×고령찰이 대조구보다 높게 나타났으나 대학찰×재래찰, 찰옥 1호는 비슷하였다. 3. 분얼수는 각 교잡종들간에 큰 차이가 없었다. 4. 이삭의 길이는 대조구에 비해 교잡종들이 거의 2배이상의 크기를 나타내었다. 5. 이삭직경은 FR805/1K₃× 고령찰의 교잡종을 제외하고 대조구와 비슷하게 나타났다. 6. 이삭열수는 Daehakchal×1K₁/LE만이 대조구와 유의성을 나타내고 기타 교잡종은 대조구와 비슷하였다. In order to evaluate the characteristics of growth and yield in F_(1) waxy hybrids using Korean local maize lines, six hybrids including check, Chalok # 1, were planted at the experinental field of e Chungnam National University. Stem and ear heights of Yeonnong × Jaerae and FR805/IK_(3) × Koryong hybrids were higher than the check hybrid. Number of fillers per plant in all hybrids were similar as 0.3 to 0.5 per plant Ear length of waxy hybrids was longer than 15㎝ of check hybrid and ear diameter was also thicker than check except FR805/IK_(3) × Koryong waxy hybrid. A final result, Yeonnong × Jaerae among hybrids was comparatively superior to other hybrids in the test.